FI63919B - DUBBELBAERVALS-LINDNINGSMASKIN - Google Patents

Description

63919

The two support roll-winding machine

The invention relates to a twin support reel winding machine having a device for accurately positioning a winding sleeve with an adhesive, such as an adhesive tape / groove etc. along the jacket line for gluing the beginning of a material web to a

German patent 27 09 684 discloses a device for pushing a finished roll of material out of a machine, for fitting a winding sleeve to a machine and for attaching the beginning of a web of material to a winding sleeve. However, the disadvantage of this device is that it does not allow the winding sleeve 15 to be mounted in position on the wedge part formed between the bearing rollers precisely, because the winding sleeve rotates through the second bearing roll po. in which case it cannot be placed in a well-defined position relative to the wedge part. However, the precise positioning of the winding sleeve 20 is not a po. necessary in the device because the beginning of the material web is attached to the winding sleeve with a stapling machine, with which the fastening can take place at the desired point in the circumference of the winding sleeve. However, stapling the beginning of the material web to the winding sleeve requires a special 25-structure and rather expensive stapler. However, a stapling device is not required when glue is applied to the winding sleeve along the jacket line, e.g., an adhesive tape, an adhesive web, etc., which attaches the beginning of the material web to the core. However, such an adhesive winding sleeve must be installed in a precisely defined position (the adhesive point is then either up or down) and the head is attached to the winding sleeve without the formation of corrugations. However, as already mentioned, this is not possible with the already known device.

In addition, the previous device requires two separate device parts, one for installing the winding sleeve and the other for pushing out the finished roll of material.

6391 9

The object of the present invention is to develop a device of the type mentioned at the outset, which is simple in structure and operation and speeds up the exchange of finished material rolls and winding sleeves, since shortening the downtime associated with the core and roll change is a very important factor in practice.

According to the invention, this is solved in such a way that the device for inserting the winding sleeve consists of clamping pliers with an ejection beam 10 fixed to the side of the material roll side. The tensioning pliers and the ejection beam then belong to the same structural unit, which can be moved by means of a single drive when changing the material roll and the winding sleeve, whereby the winding sleeve pressed out of the tensioning pliers Thus, the ejection of the roll of material and the installation of the winding sleeve take place simultaneously, whereby the downtime associated with previous devices can be considerably reduced. In addition, the device according to the invention is simple in structure and also operates more reliably than the corresponding devices to date, since it has only one drive device instead of two separate drive devices.

The invention will now be described in more detail by means of structural example 25, with reference to the drawing, in which Figures 1 to 4 show diagrammatically the work steps involved in replacing the roll of material and the winding sleeve.

The winding machine essentially comprises both rotating support rollers 1 and 2, on which a roll of material 3 is formed without a shaft from the paper web 4 as shown in Fig. 1. The directions of rotation of the support rollers 1 and 2 and the roll of material are indicated by arrows. The combined roll removal and core mounting device 5 according to the invention is in the waiting position, the winding sleeve 7 being fixed to the tensioning tongs 6 in a position-accurate manner. An ejection beam 10 is arranged on the material roll side 3 of the clamping pliers 6, which forms a unitary structure with the clamping pliers.

With the drive device 11, the roller removal and core mounting-5 device 5 can be turned as an arc, for example by means of a lever 12.

In Fig. 2, the roll removal and core mounting device 5 is seen in a position in which the ejection of the roll of material 3 begins. The ejection beam 10 lifts the material roll 3 to the right of the support roll 1 and then rotates it through the support roll 2 to the delivery table 13. The blade 14 which cuts the material path 4 has risen through the gap between the rollers 1 and 2 into the wedge-shaped part 15 between the rollers.

In the position shown in Fig. 3, the blade 14 cuts the material web 4, whereby the material roll 3 rotates on the transfer table 13. The rolling sleeve 7 is now (adhesive tape 8, adhesive web or the like is directed downwards) already in its final release position. When the material path 4 is cut, the winding sleeve 20 moves by means of the clamping jaws of the clamping pliers 6 to the wedge part formed between the position-accurately bearing rollers 1 and 2, after which the filling of the sleeve 7 into the material roll can begin.

If the front end 16 of the beam 10 is bent inwards 25 either as a curved path or at a certain angle, as can be seen in particular from Figures 2 and 3, the material path 4 can be guided well when changing the sleeve. In this case, the leading edge of the end 16 bent at a certain angle of the ejection beam 10 could also act as a counterblade when cutting the material path 30.

Instead of the beam 10, it is also possible to use a roller for pushing out the roll of material 3, which then forms an integral structural unit with the clamping pliers 6.